I have a 3500AG problems. I have flashed all different 3500 firmwares including the latest 2.1b from NEC (Liggy’s and Original version).Only 2.1b allows 16x burns. Using 1x-16x Imation’s DVD+R all turned coasters!! I have device buffer dance all the time (yes I have done defragging the HDD) during burning using Nero 66018 from 4x to 16x!!!. Burn was successful but disc was unusable. I have tried burning as low as 4x, 8x and 12x, all coasters. Is there a solution to this problem or Imation 16x +R is crap. Thanks!

it is your media. Try better media and see if you get better result. If you get better result with other media or try a different spindle of imation to see what happen, you might have coaster spindle of CMC. In general, CMC is bad.